Ale*_*uti 9 mysql apt-get mysql-5.7 ubuntu-16.04
我有一个 MySQL 5.7 实例在 Ubuntu 16 上运行没有问题，但是当我尝试安装任何其他软件包或尝试通过 apt-get 更新现有软件包时，我收到以下错误：
# apt-get upgrade
Setting up mysql-server-5.7 (5.7.20-0ubuntu0.16.04.1) ...
Checking if update is needed.
Checking server version.
Running queries to upgrade MySQL server.
mysql_upgrade: [ERROR] 1146: Table 'mysql.plugin' doesn't exist
mysql_upgrade failed with exit status 5
dpkg: error processing package mysql-server-5.7 (--configure):
subprocess installed post-installation script returned error exit status 1
No apport report written because the error message indicates its a followup error from a previous failure.
dpkg: dependency problems prevent configuration of mysql-server:
mysql-server depends on mysql-server-5.7; however:
Package mysql-server-5.7 is not configured yet.
dpkg: error processing package mysql-server (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
mysql-server-5.7
mysql-server
如果我运行 a mysqlcheck，看起来有些系统表存在，但其他系统表丢失：
mysql.columns_priv OK
mysql.db OK
mysql.engine_cost
Error : Table 'mysql.engine_cost' doesn't exist
status : Operation failed
mysql.event OK
mysql.func OK
mysql.general_log OK
mysql.gtid_executed
Error : Table 'mysql.gtid_executed' doesn't exist
status : Operation failed
mysql.help_category
Error : Table 'mysql.help_category' doesn't exist
status : Operation failed
mysql.help_keyword
Error : Table 'mysql.help_keyword' doesn't exist
status : Operation failed
mysql.help_relation
Error : Table 'mysql.help_relation' doesn't exist
status : Operation failed
mysql.help_topic
Error : Table 'mysql.help_topic' doesn't exist
status : Operation failed
mysql.innodb_index_stats
Error : Table 'mysql.innodb_index_stats' doesn't exist
status : Operation failed
mysql.innodb_table_stats
Error : Table 'mysql.innodb_table_stats' doesn't exist
status : Operation failed
mysql.ndb_binlog_index OK
mysql.plugin
Error : Table 'mysql.plugin' doesn't exist
status : Operation failed
mysql.proc OK
mysql.procs_priv OK
mysql.proxies_priv OK
mysql.server_cost
Error : Table 'mysql.server_cost' doesn't exist
status : Operation failed
mysql.servers
Error : Table 'mysql.servers' doesn't exist
status : Operation failed
mysql.slave_master_info
Error : Table 'mysql.slave_master_info' doesn't exist
status : Operation failed
mysql.slave_relay_log_info
Error : Table 'mysql.slave_relay_log_info' doesn't exist
status : Operation failed
mysql.slave_worker_info
Error : Table 'mysql.slave_worker_info' doesn't exist
status : Operation failed
mysql.slow_log OK
mysql.tables_priv OK
mysql.time_zone
Error : Table 'mysql.time_zone' doesn't exist
status : Operation failed
mysql.time_zone_leap_second
Error : Table 'mysql.time_zone_leap_second' doesn't exist
status : Operation failed
mysql.time_zone_name
Error : Table 'mysql.time_zone_name' doesn't exist
status : Operation failed
mysql.time_zone_transition
Error : Table 'mysql.time_zone_transition' doesn't exist
status : Operation failed
mysql.time_zone_transition_type
Error : Table 'mysql.time_zone_transition_type' doesn't exist
status : Operation failed
mysql.user OK
sys.sys_config
Error : Table 'sys.sys_config' doesn't exist
status : Operation failed
但是，数据库正在正确运行，如果我手动检查 SQL，看起来表存在。
mysql> SHOW TABLES;
+---------------------------+
| Tables_in_mysql |
+---------------------------+
| columns_priv |
| db |
| engine_cost |
| event |
| func |
| general_log |
| gtid_executed |
| help_category |
| help_keyword |
| help_relation |
| help_topic |
| innodb_index_stats |
| innodb_table_stats |
| ndb_binlog_index |
| plugin |
| proc |
| procs_priv |
| proxies_priv |
| server_cost |
| servers |
| slave_master_info |
| slave_relay_log_info |
| slave_worker_info |
| slow_log |
| tables_priv |
| time_zone |
| time_zone_leap_second |
| time_zone_name |
| time_zone_transition |
| time_zone_transition_type |
| user |
+---------------------------+
我使用该innodb_file_per_table=1设置，并且/var/lib/mysql目录的所有者正确设置为mysql用户。
我想在不转储现有数据的情况下解决这个问题，但我已经没有想法了。
juz*_*aai 14
我今天遇到了同样的问题，我设法在没有备份 - 重新安装 - 恢复步骤的情况下解决了它。（虽然我有备份，每个人都应该！）
就我而言，目录中有一个plugin.ibd文件，/var/lib/mysql/mysql/其他丢失的表也有文件，但可能由于某种原因它们不完整。
我做了以下事情：
mysql.plugin表的文件移动到另一个目录，例如：mv /var/lib/mysql/mysql/plugin.* /other/place/apt-get upgrade -y过去看看会发生什么。升级脚本mysql.plugin正确地重新创建了表并抱怨另一个表。我所做的所有步骤，当然是 root：
cd /var/lib/mysql/mysql
mkdir temp
mv engine_cost.* temp/
mv gtid_executed.* temp/
mv help_category.* temp/
mv help_keyword.* temp/
mv help_relation.* temp/
mv help_topic.* temp/
mv innodb_index_stats.* temp/
mv innodb_table_stats.* temp/
mv plugin.* temp/
mv server_cost.* temp/
mv servers.* temp/
mv slave_master_info.* temp/
mv slave_relay_log_info.* temp/
mv slave_worker_info.* temp/
mv time_zone.* temp/
mv time_zone_leap_second.* temp/
mv time_zone_name.* temp/
mv time_zone_transition.* temp/
mv time_zone_transition_type.* temp/
apt-get upgrade -y
我希望它可以帮助某人。
小智 11
尝试运行：
bash-4.2# mysql_install_db --user=mysql --ldata=/var/lib/mysql/
Installing MariaDB/MySQL system tables in '/var/lib/mysql/' ...
OK
这应该将系统表安装在数据目录中。然后重启mysql/mariadb服务。
最后解决问题的唯一方法是清除并重新安装 mysql 库，备份数据库并在完成所有过程后恢复它：
# Backup database
time mysqldump -u root -p database > /var/backups/restore_backup.sql
# Backup config and data
mv /var/lib/mysql /tmp/backups/mysql-lib.bak
cp /etc/mysql/my.cnf /tmp/backups/my.cnf.bak
# Purge library
sudo apt-get remove --purge mysql-server mysql-client mysql-common
sudo apt-get autoremove
sudo apt-get autoclean
# Reinstall
sudo apt-get update
sudo apt-get install mysql-server
# Restore config
cp /tmp/backups/my.cnf.bak /etc/mysql/my.cnf
sudo service mysql restart
# Create database
mysql -u root -p
mysql> CREATE DATABASE database;
# Restore backup
time mysql -u root -p database < /var/backups/restore_backup.sql